forked from luck/tmp_suning_uos_patched
RDMA/core: Remove FMR device ops
After removing FMR support from all the RDMA ULPs and providers, there is no need to keep FMR operation for IB devices. Link: https://lore.kernel.org/r/11-v3-f58e6669d5d3+2cf-fmr_removal_jgg@mellanox.com Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Max Gurtovoy
Jason Gunthorpe
parent
22c9cc2408
commit
3a578152a9
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@ -22,7 +22,6 @@ Sleeping and interrupt context
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- post_recv
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- poll_cq
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- req_notify_cq
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- map_phys_fmr
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which may not sleep and must be callable from any context.
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@ -36,7 +35,6 @@ Sleeping and interrupt context
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- ib_post_send
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- ib_post_recv
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- ib_req_notify_cq
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- ib_map_phys_fmr
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are therefore safe to call from any context.
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@ -2571,7 +2571,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
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SET_DEVICE_OP(dev_ops, add_gid);
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SET_DEVICE_OP(dev_ops, advise_mr);
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SET_DEVICE_OP(dev_ops, alloc_dm);
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SET_DEVICE_OP(dev_ops, alloc_fmr);
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SET_DEVICE_OP(dev_ops, alloc_hw_stats);
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SET_DEVICE_OP(dev_ops, alloc_mr);
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SET_DEVICE_OP(dev_ops, alloc_mr_integrity);
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@ -2598,7 +2597,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
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SET_DEVICE_OP(dev_ops, create_wq);
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SET_DEVICE_OP(dev_ops, dealloc_dm);
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SET_DEVICE_OP(dev_ops, dealloc_driver);
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SET_DEVICE_OP(dev_ops, dealloc_fmr);
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SET_DEVICE_OP(dev_ops, dealloc_mw);
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SET_DEVICE_OP(dev_ops, dealloc_pd);
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SET_DEVICE_OP(dev_ops, dealloc_ucontext);
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@ -2642,7 +2640,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
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SET_DEVICE_OP(dev_ops, iw_rem_ref);
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SET_DEVICE_OP(dev_ops, map_mr_sg);
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SET_DEVICE_OP(dev_ops, map_mr_sg_pi);
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SET_DEVICE_OP(dev_ops, map_phys_fmr);
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SET_DEVICE_OP(dev_ops, mmap);
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SET_DEVICE_OP(dev_ops, mmap_free);
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SET_DEVICE_OP(dev_ops, modify_ah);
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@ -2676,7 +2673,6 @@ void ib_set_device_ops(struct ib_device *dev, const struct ib_device_ops *ops)
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SET_DEVICE_OP(dev_ops, resize_cq);
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SET_DEVICE_OP(dev_ops, set_vf_guid);
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SET_DEVICE_OP(dev_ops, set_vf_link_state);
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SET_DEVICE_OP(dev_ops, unmap_fmr);
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SET_OBJ_SIZE(dev_ops, ib_ah);
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SET_OBJ_SIZE(dev_ops, ib_cq);
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@ -2212,54 +2212,6 @@ struct ib_mr *ib_alloc_mr_integrity(struct ib_pd *pd,
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}
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EXPORT_SYMBOL(ib_alloc_mr_integrity);
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/* "Fast" memory regions */
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struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
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int mr_access_flags,
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struct ib_fmr_attr *fmr_attr)
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{
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struct ib_fmr *fmr;
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if (!pd->device->ops.alloc_fmr)
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return ERR_PTR(-EOPNOTSUPP);
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fmr = pd->device->ops.alloc_fmr(pd, mr_access_flags, fmr_attr);
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if (!IS_ERR(fmr)) {
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fmr->device = pd->device;
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fmr->pd = pd;
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atomic_inc(&pd->usecnt);
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}
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return fmr;
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}
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EXPORT_SYMBOL(ib_alloc_fmr);
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int ib_unmap_fmr(struct list_head *fmr_list)
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{
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struct ib_fmr *fmr;
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if (list_empty(fmr_list))
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return 0;
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fmr = list_entry(fmr_list->next, struct ib_fmr, list);
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return fmr->device->ops.unmap_fmr(fmr_list);
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}
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EXPORT_SYMBOL(ib_unmap_fmr);
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int ib_dealloc_fmr(struct ib_fmr *fmr)
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{
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struct ib_pd *pd;
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int ret;
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pd = fmr->pd;
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ret = fmr->device->ops.dealloc_fmr(fmr);
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if (!ret)
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atomic_dec(&pd->usecnt);
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return ret;
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}
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EXPORT_SYMBOL(ib_dealloc_fmr);
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/* Multicast groups */
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static bool is_valid_mcast_lid(struct ib_qp *qp, u16 lid)
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@ -1475,12 +1475,6 @@ enum ib_mr_rereg_flags {
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IB_MR_REREG_SUPPORTED = ((IB_MR_REREG_ACCESS << 1) - 1)
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};
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struct ib_fmr_attr {
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int max_pages;
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int max_maps;
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u8 page_shift;
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};
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struct ib_umem;
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enum rdma_remove_reason {
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@ -1855,14 +1849,6 @@ struct ib_mw {
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enum ib_mw_type type;
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};
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struct ib_fmr {
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struct ib_device *device;
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struct ib_pd *pd;
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struct list_head list;
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u32 lkey;
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u32 rkey;
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};
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/* Supported steering options */
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enum ib_flow_attr_type {
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/* steering according to rule specifications */
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@ -2505,12 +2491,6 @@ struct ib_device_ops {
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struct ib_mw *(*alloc_mw)(struct ib_pd *pd, enum ib_mw_type type,
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struct ib_udata *udata);
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int (*dealloc_mw)(struct ib_mw *mw);
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struct ib_fmr *(*alloc_fmr)(struct ib_pd *pd, int mr_access_flags,
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struct ib_fmr_attr *fmr_attr);
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int (*map_phys_fmr)(struct ib_fmr *fmr, u64 *page_list, int list_len,
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u64 iova);
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int (*unmap_fmr)(struct list_head *fmr_list);
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int (*dealloc_fmr)(struct ib_fmr *fmr);
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int (*attach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
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int (*detach_mcast)(struct ib_qp *qp, union ib_gid *gid, u16 lid);
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struct ib_xrcd *(*alloc_xrcd)(struct ib_device *device,
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@ -4319,45 +4299,6 @@ static inline u32 ib_inc_rkey(u32 rkey)
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return ((rkey + 1) & mask) | (rkey & ~mask);
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}
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/**
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* ib_alloc_fmr - Allocates a unmapped fast memory region.
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* @pd: The protection domain associated with the unmapped region.
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* @mr_access_flags: Specifies the memory access rights.
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* @fmr_attr: Attributes of the unmapped region.
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*
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* A fast memory region must be mapped before it can be used as part of
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* a work request.
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*/
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struct ib_fmr *ib_alloc_fmr(struct ib_pd *pd,
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int mr_access_flags,
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struct ib_fmr_attr *fmr_attr);
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/**
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* ib_map_phys_fmr - Maps a list of physical pages to a fast memory region.
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* @fmr: The fast memory region to associate with the pages.
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* @page_list: An array of physical pages to map to the fast memory region.
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* @list_len: The number of pages in page_list.
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* @iova: The I/O virtual address to use with the mapped region.
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*/
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static inline int ib_map_phys_fmr(struct ib_fmr *fmr,
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u64 *page_list, int list_len,
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u64 iova)
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{
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return fmr->device->ops.map_phys_fmr(fmr, page_list, list_len, iova);
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}
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/**
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* ib_unmap_fmr - Removes the mapping from a list of fast memory regions.
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* @fmr_list: A linked list of fast memory regions to unmap.
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*/
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int ib_unmap_fmr(struct list_head *fmr_list);
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/**
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* ib_dealloc_fmr - Deallocates a fast memory region.
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* @fmr: The fast memory region to deallocate.
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*/
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int ib_dealloc_fmr(struct ib_fmr *fmr);
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/**
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* ib_attach_mcast - Attaches the specified QP to a multicast group.
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* @qp: QP to attach to the multicast group. The QP must be type
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